Bryce Harper supplied all of the offense for the Nationals last night with a three-run home run off Henderson Alvarez in the bottom of the first inning. He joined some exclusive company in the process.

After hitting 22 home runs as a 19-year-old rookie last season, Harper now has 20 home runs in his age-20 season. Chase Hughes of CSNWashington.com notes that he’s just the second player ever to have two 20-homer seasons before turning 21 years old, joining former Red Sox outfielder Tony Conigliaro (1964-1965).

Harper also has the third-most home runs (42) before his 21st birthday. Conigliaro is second all-time with 56 while Hall of Famer Mel Ott is first with 61. Harper might have been able to make a run at those two if he wasn’t dealing with nagging injuries for most of the season, but he’s still doing some very special things at a young age.